Title: Characteristics of Reference Evapotranspiration of Wetland Based on Penman-Monteith and Hargreaves Methods
Abstract: Evapotranspiration (ET) constitutes the dominant water loss from many different types of wetlands. The relative importance of ET is apparent in its influence over water depth, temperature and salinity. However, direct measurement of ET, especially for wetland, is difficult, costly, and rarely available. In this study, the Penman-Monteith model was selected to estimate the reference evapotranspiration for short and tall canopies, moreover, Hargreaves equation was also used to simulate the ET ref and test the precision of Penman-Monteith method. The results show that the reference evapotranspiration are maximal between June and August and minimal in winter, and ET rs is larger than ET os in the whole simulation periods. H ET 0 and ET os have the same variation trend, but the former was smaller than the latter during May to September. Finally, there is a strong correlation between ET os and ET rs , with the correlation coefficient are 0.98 and 0.99 at daily and monthly means scale.
Publication Year: 2012
Publication Date: 2012-12-01
Language: en
Type: article
Indexed In: ['crossref']
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